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Allowance for Credit Losses - Aggregated analysis of the changes in allowance for loan losses Details (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2020 | Sep. 30, 2019 | Sep. 30, 2020 | Sep. 30, 2019 | Dec. 31, 2019
Allowance for loan losses: |  |  |  |  |
Balance at beginning of period | $ 434,608 | $ 58,213 | $ 56,927 | $ 55,798 |
Charge-offs | (4,642) | (2,779) | (10,296) | (7,260) |
Recoveries | 4,048 | 884 | 8,287 | 2,833 |
Provision (benefit) | 7,687 | 4,028 | 71,957 | 9,220 |
Balance at end of period | 440,159 | 60,255 | 440,159 | 60,255 |
Loans individually evaluated for impairment | 1,171 |  | 1,171 |  |
Loans collectively evaluated for impairment | $ 426,934 |  | $ 426,934 |  |
Loans |  |  |  |  |
Total loans |  | 11,290,147 |  | 11,290,147 | $ 11,375,104
Construction and land development |  |  |  |  |
Loans |  |  |  |  |
Total loans |  | 1,025,387 |  | 1,025,387 | 1,017,261
Commercial non-owner occupied | Commercial loans |  |  |  |  |
Loans |  |  |  |  |
Total loans |  | 2,357,730 |  | 2,357,730 | 2,323,967
Consumer Owner Occupied Loans |  |  |  |  |
Loans |  |  |  |  |
Total loans |  | 2,760,126 |  | 2,760,126 | 2,706,960
Home equity loans | Consumer |  |  |  |  |
Loans |  |  |  |  |
Total loans |  | 773,363 |  | 773,363 | 758,020
Commercial and industrial | Commercial loans |  |  |  |  |
Loans |  |  |  |  |
Total loans |  | 1,261,527 |  | 1,261,527 | 1,386,327
Other income producing property |  |  |  |  |
Loans |  |  |  |  |
Total loans |  | 361,879 |  | 361,879 | 346,554
Consumer | Consumer |  |  |  |  |
Loans |  |  |  |  |
Total loans |  | 654,883 |  | 654,883 | 663,422
Other loans |  |  |  |  |
Loans |  |  |  |  |
Total loans |  | 1,457 |  | 1,457 | 13,892
Non-acquired loans |  |  |  |  |
Allowance for loan losses: |  |  |  |  |
Balance at beginning of period |  | 53,590 |  | 51,194 |
Charge-offs |  | (1,969) |  | (4,541) |
Recoveries |  | 834 |  | 2,461 |
Provision (benefit) |  | 2,482 |  | 5,823 |
Balance at end of period |  | 54,937 |  | 54,937 |
Loans individually evaluated for impairment |  | 1,221 |  | 1,221 |
Loans collectively evaluated for impairment |  | 53,716 |  | 53,716 |
Loans |  |  |  |  |
Loans individually evaluated for impairment |  | 54,867 |  | 54,867 |
Loans collectively evaluated for impairment |  | 8,873,645 |  | 8,873,645 |
Total loans |  | 8,928,512 |  | 8,928,512 | 9,252,831
Non-acquired loans | Commercial loans |  |  |  |  |
Loans |  |  |  |  |
Total loans |  | 5,762,144 |  | 5,762,144 | 6,062,991
Non-acquired loans | Consumer |  |  |  |  |
Loans |  |  |  |  |
Total loans |  | 3,166,368 |  | 3,166,368 | 3,189,840
Non-acquired loans | Real estate | Commercial loans |  |  |  |  |
Loans |  |  |  |  |
Total loans |  |  |  |  | 968,360
Non-acquired loans | Real estate | Consumer |  |  |  |  |
Loans |  |  |  |  |
Total loans |  | 2,639,871 |  | 2,639,871 | 2,637,467
Non-acquired loans | Construction and land development |  |  |  |  |
Allowance for loan losses: |  |  |  |  |
Balance at beginning of period |  | 5,718 |  | 5,682 |
Charge-offs |  | (69) |  | (78) |
Recoveries |  | 208 |  | 833 |
Provision (benefit) |  | 159 |  | (421) |
Balance at end of period |  | 6,016 |  | 6,016 |
Loans individually evaluated for impairment |  | 587 |  | 587 |
Loans collectively evaluated for impairment |  | 5,429 |  | 5,429 |
Loans |  |  |  |  |
Loans individually evaluated for impairment |  | 32,673 |  | 32,673 |
Loans collectively evaluated for impairment |  | 922,645 |  | 922,645 |
Total loans |  | 955,318 |  | 955,318 |
Non-acquired loans | Construction and land development | Commercial loans |  |  |  |  |
Loans |  |  |  |  |
Total loans |  | 955,318 |  | 955,318 | 968,360
Non-acquired loans | Commercial non-owner occupied |  |  |  |  |
Allowance for loan losses: |  |  |  |  |
Balance at beginning of period |  | 10,311 |  | 8,754 |
Charge-offs |  |  |  | (3) |
Recoveries |  | 2 |  | 47 |
Provision (benefit) |  | 238 |  | 1,753 |
Balance at end of period |  | 10,551 |  | 10,551 |
Loans collectively evaluated for impairment |  | 10,551 |  | 10,551 |
Loans |  |  |  |  |
Loans individually evaluated for impairment |  | 87 |  | 87 |
Loans collectively evaluated for impairment |  | 1,777,240 |  | 1,777,240 |
Total loans |  | 1,777,327 |  | 1,777,327 |
Non-acquired loans | Commercial non-owner occupied | Commercial loans |  |  |  |  |
Loans |  |  |  |  |
Total loans |  | 1,777,327 |  | 1,777,327 | 1,811,138
Non-acquired loans | Commercial owner occupied real estate loan |  |  |  |  |
Allowance for loan losses: |  |  |  |  |
Balance at beginning of period |  | 9,526 |  | 9,369 |
Charge-offs |  | (31) |  | (43) |
Recoveries |  | 18 |  | 84 |
Provision (benefit) |  | 456 |  | 559 |
Balance at end of period |  | 9,969 |  | 9,969 |
Loans individually evaluated for impairment |  | 33 |  | 33 |
Loans collectively evaluated for impairment |  | 9,936 |  | 9,936 |
Loans |  |  |  |  |
Loans individually evaluated for impairment |  | 7,135 |  | 7,135 |
Loans collectively evaluated for impairment |  | 1,670,560 |  | 1,670,560 |
Total loans |  | 1,677,695 |  | 1,677,695 |
Non-acquired loans | Commercial owner occupied real estate loan | Commercial loans |  |  |  |  |
Loans |  |  |  |  |
Total loans |  | 1,677,695 |  | 1,677,695 | 1,784,017
Non-acquired loans | Consumer Owner Occupied Loans |  |  |  |  |
Allowance for loan losses: |  |  |  |  |
Balance at beginning of period |  | 12,432 |  | 11,913 |
Charge-offs |  | (10) |  | (95) |
Recoveries |  | 149 |  | 181 |
Provision (benefit) |  | (24) |  | 548 |
Balance at end of period |  | 12,547 |  | 12,547 |
Loans individually evaluated for impairment |  | 33 |  | 33 |
Loans collectively evaluated for impairment |  | 12,514 |  | 12,514 |
Loans |  |  |  |  |
Loans individually evaluated for impairment |  | 5,127 |  | 5,127 |
Loans collectively evaluated for impairment |  | 2,113,000 |  | 2,113,000 |
Total loans |  | 2,118,127 |  | 2,118,127 |
Non-acquired loans | Consumer Owner Occupied Loans | Consumer |  |  |  |  |
Loans |  |  |  |  |
Total loans |  | 2,118,127 |  | 2,118,127 | 2,118,839
Non-acquired loans | Home equity loans |  |  |  |  |
Allowance for loan losses: |  |  |  |  |
Balance at beginning of period |  | 3,177 |  | 3,434 |
Charge-offs |  | (100) |  | (115) |
Recoveries |  | 86 |  | 220 |
Provision (benefit) |  | 28 |  | (348) |
Balance at end of period |  | 3,191 |  | 3,191 |
Loans individually evaluated for impairment |  | 121 |  | 121 |
Loans collectively evaluated for impairment |  | 3,070 |  | 3,070 |
Loans |  |  |  |  |
Loans individually evaluated for impairment |  | 2,345 |  | 2,345 |
Loans collectively evaluated for impairment |  | 519,399 |  | 519,399 |
Total loans |  | 521,744 |  | 521,744 |
Non-acquired loans | Home equity loans | Consumer |  |  |  |  |
Loans |  |  |  |  |
Total loans |  | 521,744 |  | 521,744 | 518,628
Non-acquired loans | Commercial and industrial |  |  |  |  |
Allowance for loan losses: |  |  |  |  |
Balance at beginning of period |  | 7,495 |  | 7,454 |
Charge-offs |  | (32) |  | (141) |
Recoveries |  | 77 |  | 286 |
Provision (benefit) |  | 21 |  | (38) |
Balance at end of period |  | 7,561 |  | 7,561 |
Loans individually evaluated for impairment |  | 387 |  | 387 |
Loans collectively evaluated for impairment |  | 7,174 |  | 7,174 |
Loans |  |  |  |  |
Loans individually evaluated for impairment |  | 5,313 |  | 5,313 |
Loans collectively evaluated for impairment |  | 1,125,534 |  | 1,125,534 |
Total loans |  | 1,130,847 |  | 1,130,847 |
Non-acquired loans | Commercial and industrial | Commercial loans |  |  |  |  |
Loans |  |  |  |  |
Total loans |  | 1,130,847 |  | 1,130,847 | 1,280,859
Non-acquired loans | Other income producing property |  |  |  |  |
Allowance for loan losses: |  |  |  |  |
Balance at beginning of period |  | 1,359 |  | 1,446 |
Charge-offs |  |  |  | (31) |
Recoveries |  | 29 |  | 87 |
Provision (benefit) |  | (29) |  | (143) |
Balance at end of period |  | 1,359 |  | 1,359 |
Loans individually evaluated for impairment |  | 58 |  | 58 |
Loans collectively evaluated for impairment |  | 1,301 |  | 1,301 |
Loans |  |  |  |  |
Loans individually evaluated for impairment |  | 2,096 |  | 2,096 |
Loans collectively evaluated for impairment |  | 218,861 |  | 218,861 |
Total loans |  | 220,957 |  | 220,957 | 218,617
Non-acquired loans | Other income producing property | Commercial loans |  |  |  |  |
Loans |  |  |  |  |
Total loans |  | 220,957 |  | 220,957 | 218,617
Non-acquired loans | Consumer |  |  |  |  |
Allowance for loan losses: |  |  |  |  |
Balance at beginning of period |  | 3,572 |  | 3,101 |
Charge-offs |  | (1,727) |  | (4,035) |
Recoveries |  | 265 |  | 723 |
Provision (benefit) |  | 1,633 |  | 3,954 |
Balance at end of period |  | 3,743 |  | 3,743 |
Loans individually evaluated for impairment |  | 2 |  | 2 |
Loans collectively evaluated for impairment |  | 3,741 |  | 3,741 |
Loans |  |  |  |  |
Loans individually evaluated for impairment |  | 91 |  | 91 |
Loans collectively evaluated for impairment |  | 524,949 |  | 524,949 |
Total loans |  | 525,040 |  | 525,040 |
Non-acquired loans | Consumer | Consumer |  |  |  |  |
Loans |  |  |  |  |
Total loans |  | 525,040 |  | 525,040 | 538,481
Non-acquired loans | Other loans |  |  |  |  |
Allowance for loan losses: |  |  |  |  |
Balance at beginning of period |  |  |  | 41 |
Provision (benefit) |  |  |  | (41) |
Loans |  |  |  |  |
Loans collectively evaluated for impairment |  | 1,457 |  | 1,457 |
Total loans |  | 1,457 |  | 1,457 | 13,892
Non-acquired loans | Other loans | Consumer |  |  |  |  |
Loans |  |  |  |  |
Total loans |  | 1,457 |  | 1,457 | 13,892
Acquired non-credit impaired loans |  |  |  |  |
Allowance for loan losses: |  |  |  |  |
Charge-offs |  | (810) |  | (2,719) |
Recoveries |  | 50 |  | 372 |
Provision (benefit) |  | 760 |  | 2,347 |
Loans |  |  |  |  |
Loans collectively evaluated for impairment |  | 1,965,603 |  | 1,965,603 |
Total loans |  | 1,965,603 |  | 1,965,603 | 1,760,427
Acquired non-credit impaired loans | Commercial loans |  |  |  |  |
Loans |  |  |  |  |
Total loans |  | 1,130,970 |  | 1,130,970 | 985,780
Acquired non-credit impaired loans | Consumer |  |  |  |  |
Loans |  |  |  |  |
Total loans |  | 834,633 |  | 834,633 | 774,647
Acquired non-credit impaired loans | Real estate | Consumer |  |  |  |  |
Loans |  |  |  |  |
Total loans |  | 741,544 |  | 741,544 | 685,163
Acquired non-credit impaired loans | Construction and land development |  |  |  |  |
Allowance for loan losses: |  |  |  |  |
Charge-offs |  | (39) |  | (45) |
Recoveries |  | 1 |  | 3 |
Provision (benefit) |  | 38 |  | 42 |
Loans |  |  |  |  |
Loans collectively evaluated for impairment |  | 53,302 |  | 53,302 |
Total loans |  | 53,302 |  | 53,302 |
Acquired non-credit impaired loans | Construction and land development | Commercial loans |  |  |  |  |
Loans |  |  |  |  |
Total loans |  | 53,302 |  | 53,302 | 33,569
Acquired non-credit impaired loans | Commercial non-owner occupied |  |  |  |  |
Loans |  |  |  |  |
Loans collectively evaluated for impairment |  | 503,443 |  | 503,443 |
Total loans |  | 503,443 |  | 503,443 |
Acquired non-credit impaired loans | Commercial non-owner occupied | Commercial loans |  |  |  |  |
Loans |  |  |  |  |
Total loans |  | 503,443 |  | 503,443 | 447,441
Acquired non-credit impaired loans | Commercial owner occupied real estate loan |  |  |  |  |
Allowance for loan losses: |  |  |  |  |
Charge-offs |  |  |  | (786) |
Provision (benefit) |  |  |  | 786 |
Loans |  |  |  |  |
Loans collectively evaluated for impairment |  | 345,040 |  | 345,040 |
Total loans |  | 345,040 |  | 345,040 |
Acquired non-credit impaired loans | Commercial owner occupied real estate loan | Commercial loans |  |  |  |  |
Loans |  |  |  |  |
Total loans |  | 345,040 |  | 345,040 | 307,193
Acquired non-credit impaired loans | Consumer Owner Occupied Loans |  |  |  |  |
Allowance for loan losses: |  |  |  |  |
Charge-offs |  |  |  | (6) |
Recoveries |  | 21 |  | 26 |
Provision (benefit) |  | (21) |  | (20) |
Loans |  |  |  |  |
Loans collectively evaluated for impairment |  | 543,432 |  | 543,432 |
Total loans |  | 543,432 |  | 543,432 |
Acquired non-credit impaired loans | Consumer Owner Occupied Loans | Consumer |  |  |  |  |
Loans |  |  |  |  |
Total loans |  | 543,432 |  | 543,432 | 496,431
Acquired non-credit impaired loans | Home equity loans |  |  |  |  |
Allowance for loan losses: |  |  |  |  |
Charge-offs |  | (23) |  | (263) |
Recoveries |  | 9 |  | 55 |
Provision (benefit) |  | 14 |  | 208 |
Loans |  |  |  |  |
Loans collectively evaluated for impairment |  | 198,112 |  | 198,112 |
Total loans |  | 198,112 |  | 198,112 |
Acquired non-credit impaired loans | Home equity loans | Consumer |  |  |  |  |
Loans |  |  |  |  |
Total loans |  | 198,112 |  | 198,112 | 188,732
Acquired non-credit impaired loans | Commercial and industrial |  |  |  |  |
Allowance for loan losses: |  |  |  |  |
Charge-offs |  | (648) |  | (1,288) |
Recoveries |  | 10 |  | 181 |
Provision (benefit) |  | 638 |  | 1,107 |
Loans |  |  |  |  |
Loans collectively evaluated for impairment |  | 126,092 |  | 126,092 |
Total loans |  | 126,092 |  | 126,092 |
Acquired non-credit impaired loans | Commercial and industrial | Commercial loans |  |  |  |  |
Loans |  |  |  |  |
Total loans |  | 126,092 |  | 126,092 | 101,880
Acquired non-credit impaired loans | Other income producing property |  |  |  |  |
Allowance for loan losses: |  |  |  |  |
Charge-offs |  |  |  | (26) |
Recoveries |  |  |  | 71 |
Provision (benefit) |  |  |  | (45) |
Loans |  |  |  |  |
Loans collectively evaluated for impairment |  | 103,093 |  | 103,093 |
Total loans |  | 103,093 |  | 103,093 | 95,697
Acquired non-credit impaired loans | Other income producing property | Commercial loans |  |  |  |  |
Loans |  |  |  |  |
Total loans |  | 103,093 |  | 103,093 | 95,697
Acquired non-credit impaired loans | Consumer |  |  |  |  |
Allowance for loan losses: |  |  |  |  |
Charge-offs |  | (100) |  | (305) |
Recoveries |  | 9 |  | 36 |
Provision (benefit) |  | 91 |  | 269 |
Loans |  |  |  |  |
Loans collectively evaluated for impairment |  | 93,089 |  | 93,089 |
Total loans |  | 93,089 |  | 93,089 |
Acquired non-credit impaired loans | Consumer | Consumer |  |  |  |  |
Loans |  |  |  |  |
Total loans |  | 93,089 |  | 93,089 | 89,484
Acquired credit impaired loans |  |  |  |  |
Allowance for loan losses: |  |  |  |  |
Balance at beginning of period |  | 4,623 |  | 4,604 |
Provision (benefit) |  | 786 |  | 1,050 |
Reduction due to loan removals |  | (91) |  | (336) |
Balance at end of period |  | 5,318 |  | 5,318 |
Loans collectively evaluated for impairment |  | 5,318 |  | 5,318 |
Loans |  |  |  |  |
Loans collectively evaluated for impairment |  | 396,032 |  | 396,032 |
Total loans |  | 396,032 |  | 396,032 | 361,846
Acquired credit impaired loans | Real estate | Commercial loans |  |  |  |  |
Allowance for loan losses: |  |  |  |  |
Balance at beginning of period |  | 1,009 |  | 801 |
Provision (benefit) |  | 386 |  | 599 |
Reduction due to loan removals |  |  |  | (5) |
Balance at end of period |  | 1,395 |  | 1,395 |
Loans collectively evaluated for impairment |  | 1,395 |  | 1,395 |
Loans |  |  |  |  |
Loans collectively evaluated for impairment |  | 149,134 |  | 149,134 |
Total loans |  | 149,134 |  | 149,134 | 130,938
Acquired credit impaired loans | Real estate | Consumer |  |  |  |  |
Allowance for loan losses: |  |  |  |  |
Balance at beginning of period |  | 2,346 |  | 2,246 |
Provision (benefit) |  | 447 |  | 742 |
Reduction due to loan removals |  | (91) |  | (286) |
Balance at end of period |  | 2,702 |  | 2,702 |
Loans collectively evaluated for impairment |  | 2,702 |  | 2,702 |
Loans |  |  |  |  |
Loans collectively evaluated for impairment |  | 175,044 |  | 175,044 |
Total loans |  | 175,044 |  | 175,044 | 163,359
Acquired credit impaired loans | Construction and land development |  |  |  |  |
Allowance for loan losses: |  |  |  |  |
Balance at beginning of period |  | 798 |  | 717 |
Provision (benefit) |  | (38) |  | 43 |
Balance at end of period |  | 760 |  | 760 |
Loans collectively evaluated for impairment |  | 760 |  | 760 |
Loans |  |  |  |  |
Loans collectively evaluated for impairment |  | 26,930 |  | 26,930 |
Total loans |  | 26,930 |  | 26,930 |
Acquired credit impaired loans | Construction and land development | Commercial loans |  |  |  |  |
Loans |  |  |  |  |
Total loans |  | 26,930 |  | 26,930 | 25,032
Acquired credit impaired loans | Commercial and industrial |  |  |  |  |
Allowance for loan losses: |  |  |  |  |
Balance at beginning of period |  |  |  | 79 |
Provision (benefit) |  |  |  | (34) |
Reduction due to loan removals |  |  |  | (45) |
Loans |  |  |  |  |
Loans collectively evaluated for impairment |  | 8,112 |  | 8,112 |
Total loans |  | 8,112 |  | 8,112 |
Acquired credit impaired loans | Commercial and industrial | Commercial loans |  |  |  |  |
Loans |  |  |  |  |
Total loans |  | 8,112 |  | 8,112 | 7,029
Acquired credit impaired loans | Consumer |  |  |  |  |
Allowance for loan losses: |  |  |  |  |
Balance at beginning of period |  | 470 |  | 761 |
Provision (benefit) |  | (9) |  | (300) |
Balance at end of period |  | 461 |  | 461 |
Loans collectively evaluated for impairment |  | 461 |  | 461 |
Loans |  |  |  |  |
Loans collectively evaluated for impairment |  | 36,812 |  | 36,812 |
Total loans |  | 36,812 |  | 36,812 |
Acquired credit impaired loans | Consumer | Consumer |  |  |  |  |
Loans |  |  |  |  |
Total loans |  | $ 36,812 |  | $ 36,812 | $ 35,488

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- Definition Amount of allowance for credit loss on financing receivable. Excludes allowance for financing receivable covered under loss sharing agreement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=121611835&loc=SL6953423-111524 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(7)(2)) -URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=121599878&loc=SL82895884-210446 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 13 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=121599337&loc=SL82919249-210447 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 13 -Subparagraph (f) -URI http://asc.fasb.org/extlink&oid=121599337&loc=SL82919249-210447 + Details
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- Definition Amount of valuation allowance for financing receivables that are expected to be uncollectible that were individually evaluated for impairment. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=121611835&loc=SL6953423-111524 + Details
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